Linkcom France
11 rue du Soleil Levant 92140 CLAMART Copyright © 2011 – Linkcom – All rights reserved
17
When door intercom is installed in noisy environment (noisy streets, subway stations, parking…), you can
activate the depression of background sound.
Parameter Value
Description
Default
76
b
Level of microphone (1-4)
3
On the line, there is simultaneously signal from microphone and speaker..The basic one is circuit of
semiduplex operation when incoming signal decrease microphone amplification as same as signal from
microphone decrease incoming signal. The level of microphone start is setup by this Parameter. As lower
value as higher microphone sensitivity is. In noisy environment we recommend higher value with
combination of parameters 71,75, 77.
Parameter Value
Description
Default
77
s
Fast switching voice automatic 1-4 (4 is
slowest)
2
At Parameters 75, 76 is described principal of acoustic shock suppression. Speed of circuit switching
between incoming and outgoing sound is setup by Parameter 77.
Parameter Value
Description
Default
78
l
Volt Amper (VA) characteristic of line
connection
(0/1)
1
Almost every country around the world has different telephone directives and this parameter allows
decrease voltage at doorphone line interface about 1V during OFF HOOK. Where directive requires
decreasement of line voltage
I=0
decrease voltage about 1V.
Parameter Value
Description
Default
79
k
Compensation of wires losses depends on
line current
(0/1/2)
0
The Smile DoorPhone includes circuit for long distance installations (100m and more from PBX) that can
compensate losses on wiring. You can setup in two levels depending on line current of PBX (short circuit
current I
0
).
PBX current I
0
k
- dial
Feature is off
0
20mA-50mA
1
45mA-75mA
2
Switching time
[ms]
S
- dial
1
1
2
2
4
3
8
4
